The street theatre scene in Barcelona was completely transformed in 2010, with the invention of the Rodafonio – perhaps the weirdest musical contraption in the world. Created by renowned designer and musician César Alvarez Bayer, it consists of a gigantic wheel that’s four meters high and only 15 cm wide, like a huge waffle iron.

The wheel can accommodate a crew of five – the members of the Catalan music band ‘Factoria Circular’. Three musicians sit inside the wheel in their respective metal circles, playing their musical instruments – a guitar, a saxophone, and a set of drums – to various tunes, while occasionally spinning inside the giant wheel. The other two members are actors who pedal the wheel into motion, bringing the huge mechanical device to life.